We liked very much the Saifon's place.
Modern building, good emplacement and private access to the swimming pool and fitness room.
Subway is about a 10 minute walk; from there you can connect to areas all over the city.
The appartment was perfect for 3 people. 1 king size bed and a single bed. The mattresses are very comfortable. We slept very well after 3 weeks to visitThailand :)

I would recommend her apartment to other travelers.
Thanks to Saifon !